What happened to the greenish warbler birds as they migrated from the southern portion of their range up around the tibetan plateau?

What is the name for a substance formed in a chemical reaction

Which is not a likely outcome after extensive irrigation of dry farmland? useless, unproductive soil salinization of the soil depletion of groundwater nutrient-rich soil

Which group of algae is characterized by unicellular organisms and includes some members that would be better classified as zooflagellates? euglenophytes red algae sporozoans green algae